Gilda Guimaraes Leitao
Instituição:
Universidade Federal do Rio de Janeiro
Centro:
Centro de Ciências da Saúde
Unidade:
Instituto de Pesquisas de Produtos Naturais
Departamento:
Programa de Produtos Naturais/IPPN
Formação:
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Universidade Federal do Rio de Janeiro
Química de Produtos Naturais | Doutorado | 1990 - 1992
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Universidade Federal do Rio de Janeiro
Química de Produtos Naturais | Mestrado | 1986 - 1989
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Universidade Federal do Rio de Janeiro
Farmácia Industrial | Especialização | 1985 - 1986
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Universidade Federal do Rio de Janeiro
Farmácia | Graduação | 1981 - 1984
Laboratórios:
Nuvens de Palavras:
Artigos:
(64.71% artigos com DOI)
| Titulo | DOI | Ano |
|---|---|---|
| Solvent Systems Used in Countercurrent Chromatography for the Purification of Diterpene Compounds | 10.1007/s43450-023-00432-4. | 2024 |
| SARS-CoV-2 spike protein increases angiotensin converting enzyme-2 expression and promotes an increase in glucose uptake in endothelial cells | 10.3389/av.2024.12136 | 2024 |
| Myrtucommulones and Related Acylphloroglucinols from Myrtaceae as a Promising Source of Multitarget SARS-CoV-2 Cycle Inhibitors | 10.3390/ph17040436 | 2024 |
| Brazilian Medicinal Plants and Their Metabolites as Potential Antivirals Against SARS-CoV-2: a Systematic Review of Experimental Findings | 10.1007/s43450-024-00547-2 | 2024 |
| Alkaloids from Siparuna (Siparunaceae) are predicted as the inhibitors of proteolysis and plasma coagulation caused by snake venom and potentially counteract phospholipase A2 activity of Bothrops jararaca | 10.1016/j.jep.2024.118349 | 2024 |
| In silico screening of phenylethanoid glycosides, a class of pharmacologically active compounds as natural inhibitors of SARS-CoV-2 proteases | 10.1016/j.csbj.2023.02.020 | 2023 |
| Anti-SARS-CoV-2 Activity of Ampelozizyphus amazonicus (Saracura-Mirá): Focus on the Modulation of the Spike-ACE2 Interaction by Chemically Characterized Bark Extracts by LC-DAD-APCI-MS/MS | 10.3390/molecules28073159 | 2023 |
| Brazilian Medicinal Plants with Antiamyloidogenic Activity | 10.1007/s43450-023-00424-4 | 2023 |
| Two phenolic compounds (biscoumarin and biflavonoid) from Ormocarpum kirkii S. Moore (Fabaceae) exhibit anticancer properties against human prostate cancer cells | 10.1016/j.hermed.2023.100811 | 2023 |
| Antiviral, Cytoprotective, and Anti-Inflammatory Effect of Ampelozizyphus amazonicus Ducke Ethanolic Wood Extract on Chikungunya Virus Infection | 10.3390/v15112232 | 2023 |
| Saracura-Mirá, a Proposed Brazilian Amazonian Adaptogen from Ampelozizyphus amazonicus | 10.3390/plants11020191 | 2022 |
| Bioassay-Guided Fractionation of Siparuna glycycarpa n-Butanol Extract with Inhibitory Activity against Influenza A(H1N1)pdm09 Virus by Centrifugal Partition Chromatography (CPC) | 10.3390/molecules27020399 | 2022 |
| α-glucosidase inhibition by Brazilian medicinal plant extracts characterised by ultra-high performance liquid chromatography coupled to mass spectrometry | 10.1080/14756366.2021.2022658 | 2022 |
| Distribution of 5,6-dihydro-α-pyrones by electrospray ionization ion trap mass spectrometry in different aerial parts of Hyptis monticola | 10.1016/j.phytochem.2021.112706 | 2021 |
| Flavonoids from Siparuna cristata as potential inhibitors of SARS-CoV-2 replication | 10.1007/s43450-021-00162-5 | 2021 |
| Purification of Alkaloids by Countercurrent Chromatography | 10.1007/s43450-021-00163-4 | 2021 |
| Amazonian Siparuna extracts as potential anti-influenza agents: Metabolic fingerprinting | 10.1016/j.jep.2021.113788 | 2021 |
| Mass spectrometry as a tool for the dereplication of saponins from Ampelozizyphus amazonicus Ducke bark and wood | 10.1002/pca.2972 | 2021 |
| Bioactive Non-polar Compounds from Ormocarpum kirkii Bark: a Source of Fungal Multidrug Resistance Inhibitors | 10.1007/s43450-020-00019-3 | 2020 |
| Aporphine Alkaloids from Triclisia dictyophylla Diels by pH-Zone Refining Countercurrent Chromatography | 10.1007/s10337-020-03977-x | 2020 |
| Absolute Stereochemistry of Antifungal Limonene-1,2-diols from Lippia rubella | 10.1007/s43450-020-00081-x | 2020 |
| Ziziphus joazeiro, a Saponin-Rich Brazilian Medicinal Plant: Pharmacognostic Characterization of Bark and Leaves | 10.1007/s43450-020-00109-2 | 2020 |
| Preparative mass-spectrometry profiling of minor concentrated metabolites in Salicornia gaudichaudiana Moq by high-speed countercurrent chromatography and off-line electrospray mass-spectrometry injection | 10.1002/jssc.201801195 | 2019 |
| Antifungal Phenylpropanoid Glycosides from Lippia rubella | 10.1021/acs.jnatprod.8b00975 | 2019 |
| Structure Elucidation, Conformation, and Configuration of Cytotoxic 6-Heptyl-5,6-dihydro-2 H -pyran-2-ones from Hyptis Species and Their Molecular Docking to α-Tubulin | 10.1021/acs.jnatprod.8b00908 | 2019 |
| A New Tetraglycosylated Flavonoid from Leaves of Platycyamus regnellii Benth. Isolated by High-Speed Countercurrent Chromatography | 10.21577/0103-5053.20190143 | 2019 |
| Unexpected Rearrangement and Aromatization on Dehydration Reaction of the Bioactive Diterpenequinone 7α-Hydroxyroyleanone | 10.21577/0103-5053.20190223 | 2019 |
| Use of counter-current chromatography as a selective extractor for the diterpenequinone 7α-hydroxyroyleanone from Tetradenia riparia | 10.1016/j.chroma.2018.01.020 | 2018 |
| Countercurrent chromatography separation of saponins by skeleton type from Ampelozizyphus amazonicus for off-line ultra-high-performance liquid chromatography/high resolution accurate mass spectrometry analysis and characterisation | 10.1016/j.chroma.2016.12.053 | 2017 |
| Alternating isocratic and step gradient elution high-speed counter-current chromatography for the isolation of minor phenolics from Ormocarpum kirkii bark | 10.1016/j.chroma.2016.12.026 | 2017 |
| Isolation of quinoline alkaloids from three Choisya species by high-speed countercurrent chromatography and the determination of their antioxidant capacity | 10.1016/j.bjp.2017.01.003 | 2017 |
| Counter-current chromatography with off-line detection by ultra high performance liquid chromatography/high resolution mass spectrometry in the study of the phenolic profile of Lippia origanoides | 10.1016/j.chroma.2017.09.004 | 2017 |
| A new tropane alkaloid from the leaves of Erythroxylum subsessile isolated by pH-zone refining counter-current chromatography | 10.1002/jssc.201500952 | 2016 |
| In vitro and in vivo evaluation of efficacy and safety of photoprotective formulations containing antioxidant extracts | 10.1016/j.bjp.2015.11.006 | 2016 |
| Schinus terebinthifolius countercurrent chromatography (Part II): Intra-apparatus scale-up and inter-apparatus method transfer | 10.1016/j.chroma.2016.08.054 | 2016 |
| Spray-dried extract from the Amazonian adaptogenic plant Ampelozizyphus amazonicus Ducke (Saracura-mirá): Chemical composition and immunomodulatory properties | 10.1016/j.foodres.2016.10.040 | 2016 |
| Diterpenes and a new benzaldehyde from the mangrove plant Rhizophora mangle | 10.1016/j.bjp.2016.10.004 | 2016 |
| Solvent System Selectivities in Countercurrent Chromatography Using Salicornia gaudichaudiana Metabolites as Practical Example with Off-line Electrospray Mass-Spectrometry Injection Profiling | 10.1016/j.chroma.2015.01.043 | 2015 |
| Isolation of Achyrobichalcone from Achyrocline satureioides by High- Speed Countercurrent Chromatography | 10.2174/1389201015666141110143019 | 2015 |
| Schinus terebinthifolius scale-up countercurrent chromatography (Part I): High performance countercurrent chromatography fractionation of triterpene acids with off-line detection using atmospheric pressure chemical ionization mass spectrometry | 10.1016/j.chroma.2015.02.005 | 2015 |
| Gradient x Isocratic Elution CCC on the Isolation of Verbascoside and Other Phenylethanoids: Influence of the Complexity of the Matrix | 10.1055/s-0035-1546116 | 2015 |
| Separation of New Naphthoxazole Derivatives of Lapachol by High-Speed Counter-Current Chromatography | 10.1080/10826076.2015.1063505 | 2015 |
| Ethnopharmacological evaluation of medicinal plants used against malaria by quilombola communities from Oriximiná, Brazil | 10.1016/j.jep.2015.07.035 | 2015 |
| Gradient Elution in Countercurrent Chromatography | 10.1055/s-0035-1546267 | 2015 |
| Isolation of phenolics from Rhizophora mangle by combined counter-current chromatography and gel-filtration | 2014 | |
| Ethnopharmacological studies of Lippia origanoides | 10.1016/j.bjp.2014.03.001 | 2014 |
| Bathysa australis Vanillic Acid (4-hydroxy-3-methoxybenzoic acid) Isolation by Countercurrent Chromatographic and Characterization by NMR 1H and 13C Experimental and Theoretical GIAO-B3PW91/cc-pVDZ//B3PW91/cc-pVDZ Chemical Shifts | 10.1166/jctn.2014.3559 | 2014 |
| Changes in the mobile phase composition on a stepwise counter-current chromatography elution for the isolation of flavonoids from Siparuna glycycarpa | 10.1002/jssc.201201054 | 2013 |
| Application of pH-zone-refining countercurrent chromatography for the separation of indole alkaloids from Aspidosperma rigidum Rusby | 10.1016/j.chroma.2013.10.044 | 2013 |
| Chemical composition of the volatile fractions from wild and in vitro plants of Anemia tomentosa var. anthriscifolia (Pteridophyta) | 10.1080/10412905.2012.755477 | 2013 |
| Immunobiologic and Antiinflammatory Properties of a Bark Extract from Ampelozizyphus amazonicus Ducke | 10.1155/2013/451679 | 2013 |
| Purification of a synthetic pterocarpanquinone by countercurrent chromatography | 2012 | |
| Evaluation of the Antioxidant and Phototoxic Potentials of Bauhinia microstachya var. massambabensis Vaz Leaf Extracts | 2012 | |
| A comparative study on the purification of a synthetic naphthoquinone by high-speed counter-current chromatography versus silica gel column chromatography | 2012 | |
| Antioxidant activity of natural compounds of Stachytarpheta cayennensis (Rich.) Vahl, Verbenaceae, by scavenger of mitochondrial reactive oxygen species | 10.1590/S0102-695X2011005000050 | 2011 |
| Separation of acetins by counter-current chromatography | 10.1002/jssc.201000901 | 2011 |
| Ethnopharmacological versus random plant selection methods for the evaluation of the antimycobacterial activity | 10.1590/S0102-695X2011005000084 | 2011 |
| Estudo Etnofarmacognóstico da Saracura-mirá (Ampelozizyphus amazonicus Ducke) em comunidades quilombolas do Município de Oriximiná-PA, Brasil | 10.1590/S0044-59672011000300008 | 2011 |
| Evaluation of Different Solvent Systems for the Isolation of Sparattosperma leucanthum flavonoids by counter-current chromatography | 10.1016/j.chroma.2011.06.069 | 2011 |
| Strategies of Solvent System Selection for the Isolation of Flavonoids by Countercurrent Chromatography | 10.1002/jssc.200900632 | 2010 |
| Flavones and phenylpropanoids from a sedative extract of Lantana trifolia L. | 10.1016/j.phytochem.2009.10.007 | 2010 |
| Isolation of two bioactive diterpenic acids from Copaifera glycycarpa oleoresin by high-speed counter-current chromatography. | 10.1002/pca.1229 | 2010 |
| Counter-Current chromatography separation of isatin derivatives using the sandmeyer methodology | 10.1590/S0103-50532010000400025 | 2010 |
| Structure reassignment and absolute configuration of 9-epi-presilphiperfolan-1-ol | 2010 | |
| Micropropagation of Polygonum acre Kunth var. aquatile (Mart.) Meisn, and seasonal variation of tannins in acclimatized plants | 2010 | |
| Autorização de Acesso ao Conhecimento Tradicional Associado com fins de Bioprospecção: O Caso da UFRJ e da Associação de Comunidades Quilombolas de Oriximiná ? ARQMO | 2010 | |
| Anatomia e Análise do Óleo Essencial das Folhas de Hennecartia omphalandra J. Poisson (Monimiaceae) | 2009 | |
| Isolation of chavibetol from essential oil of Pimenta pseudocaryophyllus leaf by high-speed counter-current chromatography | 10.1016/j.chroma.2009.01.111 | 2009 |
| (-)-epi-Presilphiperfolan-1-ol, A New Triquinane Sesquiterpene from the Essential Oil of Anemia tomentosa var. anthriscifolia (Pteridophyta) | 10.1016/j.tetlet.2009.06.046 | 2009 |
| Chemical Composition and Antimycobacterial Activity of the Essential Oil from Anemia tomentosa var. anthriscifolia | 2009 | |
| Analysis of the Chemical Composition and Antimycobacterial Activity of the Essential Oil from Anemia tomentosa var. anthriscifolia (Pteridophyta) | 2009 | |
| Anatomia de folha e caule e quantificação espectrofotométrica de fenóis totais e taninos de Erva-de-bicho (Polygonum acre H. B. K. var. aquatile). | 2009 | |
| Effect of different extracts from the Brazilian Atlantic Forest on the Pdr5p ATPase activity | 10.1590/S0102-695X2008000100008 | 2008 |
| Investigation of the antimycobacterial activity of 36 plant extracts from the brazilian Atlantic Forest | 10.1590/S1516-93322008000400013 | 2008 |
| Analysis of the chemical composition of the essential oils extracted from Lippia lacunosa Mart. & Schauer and Lippia rotundifolia Cham. (Verbenaceae) by gas chromatography and gas chromatography-mass spectrometry | 10.1590/S0103-50532008000700023 | 2008 |
| Considerações anatômicas e análise de óleo essencial do hipanto e do fruto de Hennecartia omphalandra J. Poisson (Monimiaceae) | 10.1590/S0102-695X2008000300016 | 2008 |
| Preparative Isolation of Antimycobacterial Shoreic Acid from Cabralea canjerana | 2008 | |
| Chemical and antimicrobial analyses of essential oil of Lippia origanoides H.B.K | 10.1016/j.foodchem.2006.01.022 | 2007 |
| Applications of Counter-current Chromatography in Organic Synthesis. Purification of Heterocyclic Derivatives of Lapachol | 2007 | |
| Ethnopharmacological Study of Two Lippia Species from Oriximiná - Brazil | 2006 | |
| Screening of Central and South American plant extracts for antimycobacterial activity by the Alamar blue test | 2006 | |
| Antioxidant and Antiviral Properties of Pseudopiptadenia contorta (Leguminosae) and of Quebracho (Schinopsis sp.) Extracts | 2005 | |
| Separation of Free and Glycosylated Flavonoids from Siparuna guianensis by Gradient and Isocratic CCC | 2005 | |
| Step-Gradient CCC Separation of Phenylpropanoid and Iridoid Glycosydes from Roots of Stachytarpheta cayennensis (Rich.) Vahl | 2005 | |
| Gradient Elution for Triterpene Separation from Cecropia lyratiloba Miquel by HSCC | 2005 | |
| Uso da Cromatografia contracorrente na obtenção de Padrões de Origem Vegetal | 2005 | |
| Substâncias Fenólicas com Atividade Antioxidante de Pesudopiptadenia contorta (Leguminosae - Mimosoidae) | 2002 | |
| Quick Preparative Separation of Natural Naphthopyranones with Antioxidant Activity by High-speed Counter-current Chromatography | 2002 | |
| Essential Oils from Four Brazilian Mollinedia | 2001 | |
| Screening of Brazilian Plant Extracts for antioxidant Activity by the the Use of DPPH Free Radical Method | 2001 | |
| Chemical Ecological Characteristics of the Herbivory of Siparuna guianensis (Monimiaceae) Seeds by the Buffy-Headed Marmoset (Callithrix flaviceps: Primates:Calitrichinae) in the Atlantic Forest of Southeastern Brazil | 2001 | |
| 3,4-Seco-Luoanes and Other Constituents from Platypodium elegans | 2001 | |
| Quantitative Determination of Moupinamide and Liriodenine in Five Mollinedia Species by High Performance Liquid Chromatography | 2001 | |
| Anatomical and Chemical Analyses of Leaf Secretory Cavities of Rustia formossa (Rubiaceae) | 2001 | |
| Chemical Constituents of Two Mollinedia Species | 2000 | |
| Kaempferol Glycosides from Siparuna apiosyce | 2000 | |
| Chemistry and Pharmacology of Monimiaceae: A Special Focus on Siparuna and Mollinedia | 1999 | |
| Química do Gênero Aristolochia | 1992 | |
| Epi-populifolic acid from Aristolochia cymbifera | 1992 | |
| Essential Olis from Brazilian Aristolochia | 1991 | |
| Composicao Quimica de Especies do Genero Aristolochia - Oleos Essenciais (Parte Ii). | 1989 | |
| Sintese de Alfa- Tetralonas Oxigenadas A Partir do Safrol e Eugenol. | 1984 |
Eventos:
(0.00% eventos com DOI)